Develop Bugs

[Q] RSA Keys

Ok I have been hearing these stories about people ****ing up their 4G radios. I want to know if I am ok. I rooted my phone when it was at 3.29 and then I decided to go back to stock by running the RUU. Since the RUU completely wipes the device are my 4G keys gone as well? I have no way to check because I am not in a 4G zone (don't even have 3G . I can't use the SDK method either.

you are fine....
No you are fine. The problem comes with people that make a nandroid backup of their phone with AmonRA 1.8 (which backs up the keys) and then they try and restore that backup on another phone. It overwrites the keys and screws up your 4G radio.
You are fine - just don't use a backup from one phone on another one. They only way you can do it is by erasing the key backup then restoring.
If you use clockwork you have nothing to worry about since it does not back up the RSA keys for the 4G radio.
Hope that helps.

Thanks. Phew that has taken a load off of my mind.

That is not true. I didn't flash another update from another phone and I lost my RSA keys. Its from flashing WIMAX updates. I guess some DEV's went based on their phones and either erased their RSA keys so when it comes to us it is null or it writes their information onto our phones. Maybe that is why everyone ends up with the same damn MAC addresses.
You could quite possibly lost your RSA keys. You won't know for sure unless you turn your 4G on and go through a connection loop (not sure if it works in non 4G areas), your MAC address is listed as the one everyone is getting when you turn on 4G, or you go through the SDK ADB method. Either way, if you lost 4G, you won't be able to go in for service or insurance claims till 4G comes to your area. Unless you actually go to a Sprint store at a 4G City, you won't be able to do much.

yup sekigah84 is correct....
best way to check is to follow the instructions in this thread http://forum.xda-developers.com/showthread.php?t=797337
a little adb shell commands and you can find out.

Yes, but his question was with installing custom ROMS and going back to the original one. He said nothing about flashing new radios. That is why my response answered his question.
What you guys added is great extra info - but does not effect him as he was asking what happened when he wipes the phone - simple answer is nothing, unless he restores using a backup that has the RSA keys from another phone.
So again - no worries kid. Your wipe and reinstall of the ROM did nothing to wipe your phones RSA keys.

mikesousa said:
Yes, but his question was with installing custom ROMS and going back to the original one. He said nothing about flashing new radios. That is why my response answered his question.
What you guys added is great extra info - but does not effect him as he was asking what happened when he wipes the phone - simple answer is nothing, unless he restores using a backup that has the RSA keys from another phone.
So again - no worries kid. Your wipe and reinstall of the ROM did nothing to wipe your phones RSA keys.
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Touche. I misread along with your post that made me pass a brain fart. I apologize lol.
Although there is now a thread going around about Amon Ra not backing up RSA keys -.-
I hope to God it does cause I rather not have to root then unroot and then have to get a replacement from Sprint again.
To OP: Just don't flash WIMAX radio updates till its confirmed what is causing people to lose RSA keys and JUST IN CASE, use Amon RA and make a Nandroid Backup.

mikesousa said:
Yes, but his question was with installing custom ROMS and going back to the original one. He said nothing about flashing new radios. That is why my response answered his question.
What you guys added is great extra info - but does not effect him as he was asking what happened when he wipes the phone - simple answer is nothing, unless he restores using a backup that has the RSA keys from another phone.
So again - no worries kid. Your wipe and reinstall of the ROM did nothing to wipe your phones RSA keys.
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Indeed good call lol...but always good to check the adb commands and make sure he didnt mess something up in the process.

No prob guys. I wasnt trying to make a fuss, I just didnt want to confuse him. Thanks for all the input!

Restore RSA Keys from backup

So here goes. I lost my RSA keys while flashing to a new rom and updating my radio, wimax, pri, etc. I didn't use the newest version of Clockwork, but instead 2.5.0.01 or something similar. I tried to update beforehand with Rom Manager, but it errored a few times. I did however backup my RSA keys to a text file using this method http://forum.xda-developers.com/showthread.php?t=887900
How can I restore them? I've searched and searched and read and searched and read. Tons of information on backing them up, ZERO information on using that backup that was said to be so important.
From what I understand, I should've backed up my wimax.img as well, but I don't think my old version of clockwork did that. Can that be replaced? Do the RSA keys just get added into the wimax.img somehow?
Any help would be greatly appreciated... especially since this is for a friends Evo, not mine!

jirafabo said:
So here goes. I lost my RSA keys while flashing to a new rom and updating my radio, wimax, pri, etc. I didn't use the newest version of Clockwork, but instead 2.5.0.01 or something similar. I tried to update beforehand with Rom Manager, but it errored a few times. I did however backup my RSA keys to a text file using this method http://forum.xda-developers.com/showthread.php?t=887900
How can I restore them? I've searched and searched and read and searched and read. Tons of information on backing them up, ZERO information on using that backup that was said to be so important.
From what I understand, I should've backed up my wimax.img as well, but I don't think my old version of clockwork did that. Can that be replaced? Do the RSA keys just get added into the wimax.img somehow?
Any help would be greatly appreciated... especially since this is for a friends Evo, not mine!
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I still don't understand why anyone would backup RSA Keys, use your own brains...
If you were wanting to test the WiMax feature for Cyanogen Mod ROM, I think you would backup your RSA Keys in case a trouble or problem occurs and it seems like most of the new players here on the EVO 4g phones are backing up their RSA Keys for no reason whatsoever... *Hence I have not backup my RSA Keys or done anything yet, and I still have a good phone thank god.
Ouch, maybe. I hope your issue gets resolved someway somehow, good luck, all I can say for you. ;/

alekosy said:
I still don't understand why anyone would backup RSA Keys, use your own brains...
If you were wanting to test the WiMax feature for Cyanogen Mod ROM, I think you would backup your RSA Keys in case a trouble or problem occurs and it seems like most of the new players here on the EVO 4g phones are backing up their RSA Keys for no reason whatsoever... *Hence I have not backup my RSA Keys or done anything yet, and I still have a good phone thank god.
Ouch, maybe. I hope your issue gets resolved someway somehow, good luck, all I can say for you. ;/
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I backed up my RSA keys because thats what i was told to do. Funny that on that entire RSA page it didn't say a word about backing up your wimax.img. Not to mention the OP has no clue how to restore the backups. Pretty much gave me a false sense of security. But I understand it's at my own risk.

jirafabo said:
I backed up my RSA keys because thats what i was told to do. Funny that on that entire RSA page it didn't say a word about backing up your wimax.img. Not to mention the OP has no clue how to restore the backups. Pretty much gave me a false sense of security. But I understand it's at my own risk.
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+1 for that thought, most players of the EVO 4g playing around with the WiMax or RSA Keys should be extra careful.

alekosy said:
+1 for that thought, most players of the EVO 4g playing around with the WiMax or RSA Keys should be extra careful.
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Problem is, all I did was update his root with unrevoked3, wipe, flash a new rom, and update via the all in one radio/wimax/pri zip. Next thing I know 4g was gone and my rsa didn't check out correctly via adb. Been rooting/flashing evo's and epic's since day one and now all of a sudden we have this new problem? where was that problem before? i dont get it.

Why would anyone want to do a backup? To have it just incase something happens.
Too many people have lost their RSA keys from flashing. Why would you not want to have a backup? Once you lose your RSA keys, the only way (short of actually restoring the backup you made which no one has any idea how to do) is to return it to Sprint for a new phone.
And yes. I do agree it is pretty dumb that there is no restore method for the RSA backup.

So basically those RSA keys are useless?

Unrevoked has had a reputation for wiping 4g since the beginning. Did you ever do a backup with amon ra? If so you can use the wimax.img from that to restore the entire partition.
Sent from my PC36100 using XDA App

xHausx said:
Unrevoked has had a reputation for wiping 4g since the beginning. Did you ever do a backup with amon ra? If so you can use the wimax.img from that to restore the entire partition.
Sent from my PC36100 using XDA App
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Never did an amon ra backup. Only a clockwork, and it was the older version of clockwork. The wimax.img would be it's own item inside the nandroid backup folder correct? It's not there.
Now, I know the RSA keys are matched with each phone, but how bout the WiMax image? Can I use another WiMax.img and just replace with the correct RSA keys?

jirafabo said:
Never did an amon ra backup. Only a clockwork, and it was the older version of clockwork. The wimax.img would be it's own item inside the nandroid backup folder correct? It's not there.
Now, I know the RSA keys are matched with each phone, but how bout the WiMax image? Can I use another WiMax.img and just replace with the correct RSA keys?
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I'm pretty sure there is much more to 4g then just the keys. You'll need your own certificates and everything. Toast our shinzul would be the ones to ask though, I'm not that familiar with the internal workings of 4g.
Sent from my PC36100 using XDA App

xHausx said:
I'm pretty sure there is much more to 4g then just the keys. You'll need your own certificates and everything. Toast our shinzul would be the ones to ask though, I'm not that familiar with the internal workings of 4g.
Sent from my PC36100 using XDA App
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Kinda what I was afraid of. Not sure why people are pushing the backup of RSA keys if they're useless on their own. It's the wimax.img that is needed.
I'd like to complain and point fingers but I understand it's at my own risk.

Transfer RSA keys?

Well my old Evo broke so i got the replacement one and long and behold i mess up the rsa keys..now my old evo still has the rsa keys intact (screen is broken on the phone) and i believe i read somewhere that i could transfer those rsa keys to my new one. If so..how can i? or can i get my RSA keys back some way?

catdeerduck said:
Well my old Evo broke so i got the replacement one and long and behold i mess up the rsa keys..now my old evo still has the rsa keys intact (screen is broken on the phone) and i believe i read somewhere that i could transfer those rsa keys to my new one. If so..how can i? or can i get my RSA keys back some way?
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If your recovery is amon RA, then all you have to do is enter recovery, go into the Backup/Restore menu and make a nandroid backup of your WIMAX keys. It will be saved to a nandroid folder on your SD card.

I wouldn't recommend it. The keys are tied to a specific phone's hardware, and Sprint might not have your old keys active anymore.

drmacinyasha said:
I wouldn't recommend it. The keys are tied to a specific phone's hardware, and Sprint might not have your old keys active anymore.
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You are absolutely right. Although I read the OP, for some reason, I had it in my mind to help him make a backup of his wimax keys on his new device even though it is the one with the messed up keys....Brain Fart....Thanks for catching it and following up. I do appreciate it....

drmacinyasha said:
I wouldn't recommend it. The keys are tied to a specific phone's hardware, and Sprint might not have your old keys active anymore.
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Agreed, but on the other hand...logically...what does he have to lose by trying it? If the old Evo is already broken/inoperable yet still has it's RSA keys, and the new Evo is functioning normally, yet is missing it's RSA keys, then what's the worst that could happen? Worst case, he still has one old/broken Evo, and one new(er) Evo that still doesn't connect to 4g. Best case, it works, and he has a fully functioning Evo.
And the easiest way to try doing it, would be if you had used Amon Ra 1.8.0 or newer to create any backups on your old Evo (that still has RSA keys), then just simply restore that backup on your new Evo. That should put your old RSA keys on your new device. (that will only work if your old Evo and new Evo both have the same size recovery partition. If they don't, it will cause some bad issues. I suggest against doing it, unless you're sure they both have same size recovery partition. I forget how to check at the moment, but I will research it for you) The other way would be, you could take the 'wimax.img' out of an old nandroid backup, and place it into a new backup that you've recently created. (assuming both backups were created using the same recovery)
Edit: to check partition erase size, use terminal emulator on your phone. Simply enter the command 'cat /proc/mtd' (without quotes) then hit enter. You should see a series of numbers either being 00020000 or 00040000. Whichever it is on your old Evo, needs to be the same on the new one. Otherwise, don't attempt restoring an old backup on the new phone!!
Now, as has already been stated, this is generally not recommended, and I have never personally tried it, and have absolutely no clue if it will actually work. But as I stated, the way that I see it, you have nothing to lose. Just make a good backup of your current phone in it's current state, before you go trying to restore an old backup from a different phone to it. It's expermental, as far as I'm concerned.

[Q] 4g broke and cant unroot HELP

Need help fixing 4g. Dont know when it stopped working but I have tried other roms and no luck. I have updated the radio then the profile and then the prl, I rebooted and then did the wimax and profile and prl and deleted some wimax file like one of the post said to do. No luck at all
I then tried to unroot to see if sprint would swap it out. When I try to unroot it tells me my battery is less then 30% and the other ruus say they dont see my phone. I dont know how I rooted it but I think it was with unrevoked not sure.
4g says scanning then connecting and back to scanning thats it. I use mikrom 4.61 right now

Did you try restoring a backup that had wimax working?
This epic reply brought to you by none other than my roxx'd out Evo.

go here
http://forum.xda-developers.com/showthread.php?t=829045&page=60 this is the site it may help scroll all the way down i lost my 4g i had to send my phone back to htc and wait a week it was horrible

rhconcepts said:
Need help fixing 4g. Dont know when it stopped working but I have tried other roms and no luck. I have updated the radio then the profile and then the prl, I rebooted and then did the wimax and profile and prl and deleted some wimax file like one of the post said to do. No luck at all
I then tried to unroot to see if sprint would swap it out. When I try to unroot it tells me my battery is less then 30% and the other ruus say they dont see my phone. I dont know how I rooted it but I think it was with unrevoked not sure.
4g says scanning then connecting and back to scanning thats it. I use mikrom 4.61 right now
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Did you check your RSA keys with the app from the Market?
Is your battery less than 30%? If it is, plug it in. If you want to unroot, just dl the s-on zip, flash that, then place the PC36IMG.zip on the root of your SD Card and go to hboot and let it update.

I got it unrooted. I did the unrevoke on patch and tried like 5 zip files and one of them worked. So its stock but I don't think 4g is working yet ill know tomorrow when I goto work.
Now what is this thing from the market for? Never mind I looked it up. So if my key is lost what do I do then? Send it in?
And no I didn't have any backups
Sent from my PC36100 using XDA Premium App

You should have to buy a new phone for being a moron. This is why every post about rooting reminds you to make a backup. You messed up live with the consequences. Sorry that is harsh, but this is preventable and all to common. People are way to over their heads messing with their phones like this. Now you will try to get your phone replaced and because of people like yourself replacement warrenties get more strict and costs go up. Sorry for the rant it just really annoys me that people keep ruining their phones because they are clueless.
Sent from my PC36100 using XDA App

Rem3Dy said:
You should have to buy a new phone for being a moron. This is why every post about rooting reminds you to make a backup. You messed up live with the consequences. Sorry that is harsh, but this is preventable and all to common. People are way to over their heads messing with their phones like this. Now you will try to get your phone replaced and because of people like yourself replacement warrenties get more strict and costs go up. Sorry for the rant it just really annoys me that people keep ruining their phones because they are clueless.
Sent from my PC36100 using XDA App
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Your not being harsh at all... YOUR BEING A DINK,, And what would a backup do for me because I dont know crap right.. I did find my very first backup from when I first rooted the phone and that didnt help at all. So I unrooted it and its still not working. And thanks to the rest of you guys for the help and info, Im thinking the wimax key is gone but I didnt want to root the phone to find out. Sprint is doing a swap right now so Im all good..

rhconcepts said:
Your not being harsh at all... YOUR BEING A DINK,, And what would a backup do for me because I dont know crap right.. I did find my very first backup from when I first rooted the phone and that didnt help at all. So I unrooted it and its still not working. And thanks to the rest of you guys for the help and info, Im thinking the wimax key is gone but I didnt want to root the phone to find out. Sprint is doing a swap right now so Im all good..
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Good for you, hope you learned your lesson.
Sent from my PC36100 using Tapatalk

Me? No I didn't. Everyone says to do a backup but when I found my backup it didn't help. Even the stock Rom didn't help. So if someone can tell me how to backup the wimax key that may help next time. But what I see is once its gone its gone, not even a backup will help. One thing I did learn is that I'm staying with mik's Rom lol.
I rooted my evo and now I see a wimax backup in the recovery. I have never seen that in the backup of the recovery before. But many things have changed so could it be something they added in down the road? I rooted the phone when it first came out. But now I see what you are talking about the backup. Maybe next time someone can fill me in on that and not be such a ass.
Sent from my PC36100 using XDA Premium App

i agree man chill out

rhconcepts said:
Me? No I didn't. Everyone says to do a backup but when I found my backup it didn't help. Even the stock Rom didn't help. So if someone can tell me how to backup the wimax key that may help next time. But what I see is once its gone its gone, not even a backup will help. One thing I did learn is that I'm staying with mik's Rom lol.
Sent from my PC36100 using XDA Premium App
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It's easiest to do with Amon-Ra recovery, which you can find out about installing if you do a search for Amon-Ra 2.3. When using Ra, go to backup, and just check "Wimax." It'll backup just your wimax. Now, just go into your nandroid folder on your sd and add a "-wimax_key"to the end of the file name so you can remember it, and then put that backup in multiple safe places.
Are you sure it's your phone that is having the issue? Sprint could just have an outage. I've had some janky 4g coverage lately.
If it is your phone, what recovery and version are you running? All the new recoveries backup the Wimax keys. It's not true that "once it is gone, it's gone." I imagine you ran Unrevoked to root it which installs Clockworkmod recovery, so your original nandroid backup should have the keys backedup already. In that case you'd just need to wipe and then restore the nandroid. Upon doing that, it will also restore your Wimax key. DL the Wimax key checker from the market as previously mentioned and verify your RSA (Wimax) key is present. You are good to go if so.

eventer289 said:
It's easiest to do with Amon-Ra recovery, which you can find out about installing if you do a search for Amon-Ra 2.3. When using Ra, go to backup, and just check "Wimax." It'll backup just your wimax. Now, just go into your nandroid folder on your sd and add a "-wimax_key"to the end of the file name so you can remember it, and then put that backup in multiple safe places.
Are you sure it's your phone that is having the issue? Sprint could just have an outage. I've had some janky 4g coverage lately.
If it is your phone, what recovery and version are you running? All the new recoveries backup the Wimax keys. It's not true that "once it is gone, it's gone." I imagine you ran Unrevoked to root it which installs Clockworkmod recovery, so your original nandroid backup should have the keys backedup already. In that case you'd just need to wipe and then restore the nandroid. Upon doing that, it will also restore your Wimax key. DL the Wimax key checker from the market as previously mentioned and verify your RSA (Wimax) key is present. You are good to go if so.
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Thanks for the info. It was the phone for sure and I must have had the very first recovery version because I never seen the wimax backup before. Now on my new phone I see the wimax and other things I can backup. So on this one I checked them all and did my backup So that must be why the backup I found didnt help me. I never thought about checking to see if the recovery had updates.

[Q] Evo 4g inc, how do I get my RSA keys

I have just signed up for sprint and ordered the EVO 4g, and I have scoured the forums for an answer to no avail (buried deep?).
How does one get their RSA keys?
I am going to load cm7 asap when I get the phone and I was reading up on how to do so, along with many threads on how RSA keys are getting "lost".
I didn't see any how-to's on how to back up RSA (not only related to cm7, which is why I' posting here, please don't bite my head off)
Any help will be appreciated!

http://forum.xda-developers.com/showthread.php?t=887900

well lookie there. Thanks!

Delvien said:
well lookie there. Thanks!
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You can also install amon ra recovery and when you make a nandroid backup you can choose to backup WiMAX keys
Sent from my Warm 3.5 Evo using XDA app

I would install amon RA or the amon RA style supersonic recovery and make a backup with only the wimax option checked and then store that backup somewhere safe like dropbox or on a flashdrive so in case your PC goes down you still have a copy safe and sound